nginx配置SSL实现服务器/客户端双向认证

      本人不才，配置了两天，终于搞出来了，结合网上诸多博文，特此总结一下！

配置环境：

      Ubuntu 11.04

     PCRE 8.31

     Openssl 2.0.2

     Nginx 1.2.5

    为了确保能在 nginx中使用正则表达式进行更灵活的配置，安装之前需要确定系统是否安装有 PCRE（Perl Compatible Regular Expressions）包。可以到ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/
下载最新的 PCRE 源码包，使用下面命令下载编译和安装 PCRE 包：

# wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.31.tar.bz2 # tar jxvf pcre-8.31.tar.bz2
# cd pcre-8.31
# ./configure –enable-utf8
# make
# make install

        openssl为开源软件，在Linux（或UNIX/Cygwin）下创建一个简单的CA。我们可以利用这个CA进行PKI、数字证书相关的测试。比如，在测试用Tomcat或Apache构建HTTPS双向认证时，我们可以利用自己建立的测试CA来为服务器端颁发服务器数字证书，为客户端（浏览器）生成文件形式的数字证书（可以同时利用openssl生成客户端私钥），安装方法和上面类似。

       下面重点说说nginx的安装方法：

        下载最新稳定版本1.2.5，使用命令：

# tar zxvf nginx-1.2.5.tar.gz
# cd nginx-1.2.5
# ./configure
--prefix=/usr
--sbin-path=/usr/sbin/nginx
--conf-path=/etc/nginx/nginx.conf
--error-log-path=/var/log/nginx/error.log
--pid-path=/var/run/nginx/nginx.pid
--lock-path=/var/lock/nginx.lock
--user=www-nginx
--group=www
--with-http_ssl_module
--with-http_stub_status_module
--with-http_flv_module
--with-http_gzip_static_module
--http-log-path=/var/log/nginx/access.log
--http-client-body-temp-path=/var/tmp/nginx/client/
--http-proxy-temp-path=/var/tmp/nginx/proxy/
--http-fastcgi-temp-path=/var/tmp/nginx/fcgi/
# 简单安装 ./configure --prefix=/opt/nginx --with-http_stub_status_module --with-http_ssl_module
# make
# make install

      注意：在使用"--prefix"等配置项时，前面是两横"--"，而不是"-"，这里有些博文根本没注意到，害得我晕了半天。    

      --with-http_stub_status_module 是为了启用 nginx 的 NginxStatus 功能，用来监控 nginx 的当前状态。

      --with-http_ssl_module 启用http_ssl模块

      --with-ipv6 支持ipv6

       安装成功后 /opt/nginx 目录下有四个子目录分别是：conf、html、logs、sbin 。其中 nginx 的配置文件存放于 conf/nginx.conf，nginx 只有一个程序文件位于 sbin 目录下。确保系统的 80 端口没被其他程序占用，运行 sbin/./nginx 命令来启动 Nginx，打开浏览器访问此机器的 IP，如果浏览器出现 Welcome to nginx! 则表示 nginx 已经安装并运行成功。

       注：此处采用sbin/./nginx命令启动是因为我这里如果用网上说的sbin/nginx启动的话，根本启动不了，而且会出现安装nginx的提示，很怪！

使用openssl制作证书：

    1、服务器单向验证

    创建并进入sslkey存放目录

       # mkdir /opt/nginx/sslkey

       # cd /opt/nginx/sslkey

    ①、生成RSA密钥：

       # openssl genrsa -out key.pem 2048

    ②、生成一个证书请求

       # openssl req -new -key key.pem -out cert.csr

       # //会提示输入省份、城市、域名信息等，重要的是，email 一定要是你的域名后缀的你可以拿着这个文件去数字证书颁发机构（即CA）申请一个数字证书。CA会给你一个新的文件cacert.pem，那才是你的数字证书。

    如果是自己做测试，就可以用下面这个命令来生成证书：

       # openssl req -new -x509 -nodes -out server.crt -keyout server.key

    ③、修改 nginx 配置

# HTTPS server
#
server {
listen 443;
server_name localhost;

ssl on;
ssl_certificate /opt/nginx/sslkey/server.crt;
ssl_certificate_key /opt/nginx/sslkey/server.key;

ssl_session_timeout 5m;

ssl_protocols SSLv2 SSLv3 TLSv1;
ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;
ssl_prefer_server_ciphers on;

location / {
root /home/workspace/;
index index.asp index.aspx;
}
}

   配置好后，重启nginx，采用 https打开网站，浏览器会提示证书错误，点击继续浏览即可。

   2、服务器-客户端双向验证

   在nginx 目录下建立ca文件夹，进入ca。

        #
mkdir newcerts private conf server。

   其中newcerts子目录将存放CA签署（颁发）过的数字证书（证书备份目录）。而private目录用于存放CA的私钥。目录conf只是用于存放一些简化参数

用的配置文件，server存放服务器证书文件。

   ①、在conf目录创建文件openssl.conf配置文件，内容如下：

[ ca ]
default_ca      = foo                   # The default ca section

[ foo ]
dir            = /opt/nginx/ca         # top dir
database       = /opt/nginx/ca/index.txt          # index file.
new_certs_dir  = /opt/nginx/ca/newcerts           # new certs dir

certificate    = /opt/nginx/ca/private/ca.crt         # The CA cert
serial         = /opt/nginx/ca/serial             # serial no file
private_key    = /opt/nginx/ca/private/ca.key  # CA private key
RANDFILE       =/opt/nginx/ca/private/.rand      # random number file

default_days   = 365                     # how long to certify for
default_crl_days= 30                     # how long before next CRL
default_md     = md5                     # message digest method to use
unique_subject = no                      # Set to 'no' to allow creation of
# several ctificates with same subject.
policy         = policy_any              # default policy

[ policy_any ]
countryName = match
stateOrProvinceName = match
organizationName = match
organizationalUnitName = match
localityName            = optional
commonName              = supplied
emailAddress            = optional

        注：你也可以直接修改openssl的配置文件，这样的话后面制作证书的代码中就不用引用这个配置文件了。

   ②、使用脚本创建证书

   下面的几个脚本都放在/nginx/ca/目录下。

   创建一个新的CA根证书。

new_ca.sh:

#!/bin/sh
# Generate the key.
openssl genrsa -out private/ca.key
# Generate a certificate request.
openssl req -new -key private/ca.key -out private/ca.csr
# Self signing key is bad... this could work with a third party signed key... registeryfly has them on for $16 but I'm too cheap lazy to get one on a lark.
# I'm also not 100% sure if any old certificate will work or if you have to buy a special one that you can sign with. I could investigate further but since this
# service will never see the light of an unencrypted Internet see the cheap and lazy remark.
# So self sign our root key.
openssl x509 -req -days 365 -in private/ca.csr -signkey private/ca.key -out private/ca.crt
# Setup the first serial number for our keys... can be any 4 digit hex string... not sure if there are broader bounds but everything I've seen uses 4 digits.
echo FACE > serial
# Create the CA's key database.
touch index.txt
# Create a Certificate Revocation list for removing 'user certificates.'
openssl ca -gencrl -out /opt/nginx/ca/private/ca.crl -crldays 7 -config "/opt/nginx/ca/conf/openssl.conf"

    执行 sh new_ca.sh生成新的CA证书。

    生成服务器证书的脚本。

new_server.sh:

# Create us a key. Don't bother putting a password on it since you will need it to start apache. If you have a better work around I'd love to hear it.
openssl genrsa -out server/server.key
# Take our key and create a Certificate Signing Request for it.
openssl req -new -key server/server.key -out server/server.csr
# Sign this bastard key with our bastard CA key.
openssl ca -in server/server.csr -cert private/ca.crt -keyfile private/ca.key -out server/server.crt -config "/opt/nginx/ca/conf/openssl.conf"

    执行 sh new_server.sh生成新服务器的证书

    配置 nginx的ssl支持：

#user  www-nginx;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

events {
worker_connections  1024;
}
http {
include       mime.types;
default_type  application/octet-stream;
sendfile        on;
keepalive_timeout  65;
#gzip  on;

# HTTPS server
#
server {
listen       443;
server_name  localhost;
ssi on;
ssi_silent_errors on;
ssi_types text/shtml;

ssl                  on;
ssl_certificate      /opt/nginx/ca/server/server.crt;
ssl_certificate_key  /opt/nginx/ca/server/server.key;
ssl_client_certificate /opt/nginx/ca/private/ca.crt;

ssl_session_timeout  5m;
ssl_verify_client on;  #开户客户端证书验证

ssl_protocols  SSLv2 SSLv3 TLSv1;
ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;
ssl_prefer_server_ciphers   on;

location / {
root /home/workspace/;
index index.asp index.aspx;
}
}
}

    启动nginx ,等待客户连接，如果此时连接服务器，将提示400 Bad request certification的错误，故还需要生成客户端证书。

new_user.sh:

#!/bin/sh
# The base of where our SSL stuff lives.
base="/opt/nginx/ca"
# Were we would like to store keys... in this case we take the username given to us and store everything there.
mkdir -p $base/users/

# Let's create us a key for this user... yeah not sure why people want to use DES3 but at least let's make us a nice big key.
openssl genrsa -des3 -out $base/users/client.key 1024
# Create a Certificate Signing Request for said key.
openssl req -new -key $base/users/client.key -out $base/users/client.csr
# Sign the key with our CA's key and cert and create the user's certificate out of it.
openssl ca -in $base/users/client.csr -cert $base/private/ca.crt -keyfile $base/private/ca.key -out $base/users/client.crt -config "/opt/nginx/ca/conf/openssl.conf"

# This is the tricky bit... convert the certificate into a form that most browsers will understand PKCS12 to be specific.
# The export password is the password used for the browser to extract the bits it needs and insert the key into the user's keychain.
# Take the same precaution with the export password that would take with any other password based authentication scheme.
openssl pkcs12 -export -clcerts -in $base/users/client.crt -inkey $base/users/client.key -out $base/users/client.p12

 

   执行 shnew_user.sh生成一个 client证书。

       按照提示一步一步来，这里要注意的是客户证书的几个项目要和根证书匹配。

       也就是前面配置的:

             countryName = match

             stateOrProvinceName = match

             organizationName = match

             organizationalUnitName = match


        不一致的话无法生成最后的客户证书，证书生成后，客户端导入证书浏览器，即可打开网站。

注意事项：

    1、制作证书时会提示输入密码，服务器证书和客户端证书密码可以不相同。

    2、服务器证书和客户端证书制作时提示输入省份、城市、域名信息等，需保持一致。

    3、Nginx默认未开启SSI，上面配置已开启。

    4、Nginx不能自启动，需要如下配置：

cd /etc/init.d
sudo touch nginx
sudo chmod +x nginx

nginx内容：

#! /bin/sh
#
### BEGIN INIT INFO
# Provides:          nginx
# Required-Start:    $syslog $local_fs $remote_fs
# Required-Stop:     $syslog $local_fs $remote_fs
# Should-Start:      dbus avahi
# Should-Stop:       dbus avahi
# Default-Start:     2 3 4 5
# Default-Stop:      1
# Short-Description: Nginx Server
# Description:       Nginx
### END INIT INFO

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/opt/nginx/sbin
DAEMON=/opt/nginx/sbin/nginx
NAME=nginx
DESC="Nginx Server"
PID_FILE=/opt/nginx/logs/nginx.pid

test -x $DAEMON || exit 0

RUN=yes
#RUN_AS_USER=root

#DAEMON_OPTS="-a $RUN_AS_USER"

set -e

case "$1" in
start)
echo -n "Starting $DESC: "
start-stop-daemon --start --quiet --pidfile $PID_FILE \
--exec $DAEMON
echo "$NAME."
;;
stop)
echo -n "Stopping $DESC: "
start-stop-daemon --stop --oknodo --quiet --pidfile $PID_FILE \
--exec $DAEMON
echo "$NAME."
;;
force-reload)
# check whether $DAEMON is running. If so, restart
start-stop-daemon --stop --test --quiet --pidfile \
$PID_FILE --exec $DAEMON \
&& $0 restart \
|| exit 0
;;
restart)
echo -n "Restarting $DESC: "
start-stop-daemon --stop --oknodo --quiet --pidfile \
$PID_FILE --exec $DAEMON
sleep 1
start-stop-daemon --start --quiet --pidfile \
$PID_FILE --exec $DAEMON
echo "$NAME."
;;
status)
if [ -s $PID_FILE ]; then
RUNNING=$(cat $PID_FILE)
if [ -d /proc/$RUNNING ]; then
if [ $(readlink /proc/$RUNNING/exe) = $DAEMON ]; then
echo "$NAME is running."
exit 0
fi
fi

# No such PID, or executables don't match
echo "$NAME is not running, but pidfile existed."
rm $PID_FILE
exit 1
else
rm -f $PID_FILE
echo "$NAME not running."
exit 1
fi
;;
*)
N=/etc/init.d/$NAME
echo "Usage: $N {start|stop|restart|force-reload}" >&2
exit 1
;;
esac

exit 0

设置自启动：

sudo chkconfig --list nginx
sudo chkconfig nginx on

 

作者：kunoy
出处：http://blog.csdn.net/kunoy
申明：作者写博是为了总结经验，和交流学习之用。

如需转载，请尽量保留此申明，并在文章页面明显位置给出原文连接。谢谢！